Rectangles: (5 entries)
  0: Rectangle: x1=0, y1=0, x2=0, y2=0
  1: Rectangle: x1=199, y1=578, x2=224, y2=602
  2: Rectangle: x1=260, y1=742, x2=293, y2=775
  3: Rectangle: x1=315, y1=913, x2=355, y2=953
  4: Rectangle: x1=358, y1=1036, x2=404, y2=1082